Sungate & Inca Bridge
The the prestigious and principal entrance to the Citadel. The royal road weaves its way down through Sungate, gracing you with the first views of Machu Picchu. It lies at 2,720 meters above sea level (8,924 feet). Sun gate is the place where all the ruins of the inner city are visible along with views of Huayna Picchu and attributes you the opportunity to take that iconic photo. The trek up to sungate is additional to the exploration of the city and needs no extra permit to wander up. It is well sign posted, take approximately an hour up and an hour back and is classed as an easy to moderate walk.
The Inca Bridge
Well sign posted is an excellent option if you would prefer a flatter or shorter walk ; It takes approximately 30 minutes there and back and considered easy. It spurs west off from the first platform that you encounter, with sign posts to direct you above the agricultural sites into the rainforest. The quaint path has been recently restored and allows you to escape much of the crowds and hustle to enjoy the flora and fauna of the area. Approaching the bridge you will need to register when entering and leaving. Although it is not necessary to have any other ticket besides that of you entrance to Machu Picchu. This narrow bridge is an engineering feat, hugging the side of a granite mountain and hovering above an abyss. It is said that the bridge was a secret entrance into the city below for the Incan military.
As the Machu Picchu ruins have no be regulated into a one way system we encourage you to visit both these extra sites first before descending into the ruins, as once you are there you cannot back track.